A colonel in the Pakistan's spy agency Inter-Services Intelligence had provided vital help to the CIA in tracing Al Qaeda leader Osama bin Laden, a new book has claimed.  

The book also claims that Pakistan Army Chief General Ashfaq Pervez Kayani may have been briefed by the United States on its operation to kill Osama bin Laden, some five months in advance. 

Leading from Behind: The Reluctant President and the Advisors Who Decide for Him, penned by eminent American journalist Richard Miniter, hit the stands on Tuesday.

The new book also says that land of the Abbottabad compound, where the Al Qaeda leader lived with his family, was"carved out" from the Pakistan military academy compound.   

"A colonel in Pakistan's feared intelligence service, the ISI, provided vital help in locating Bin Laden when he walked into the CIA's Islamabad station in August 2010," says the book.   

Bin Laden was killed by US Navy SEALs inside his compound in Abbottabad, Pakistan in May 2011.